Lower speed limits on motorways are generally associated with road safety. But several European countries are now debating whether they also benefit the environment and, if so, how much. There is no simple way of measuring the environmental benefits of lower speed limits but several factors clearly play a key role.

The electric car finally seems to be on the verge of breaking through, offering significant environmental benefits, especially in urban areas. Innovative business models are on the way which should boost consumer acceptance and overcome the remaining barriers, such as high battery costs, green electricity supply and charging infrastructure.

As a major contributor to greenhouse gases, the transport sector figures high on the international climate change agenda. But for many living in cities, under flight paths or near major road and rail links, it's another of transport's by-products that causes most immediate harm: noise.

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Lower speed limits on motorways are generally associated with road safety. But several European countries are now debating whether they also benefit the environment and, if so, how much. There is no ...

The use of A/C can increase your electricity bill by 33 %. A fan requires one tenth of the energy used by an A/C system; sunshades, blinds, shutters and the cool of the night use no energy at all.
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